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## org.apache.cocoon.forms.datatype.validationruleimpl
Class AssertValidationRule

    java.lang.Object
      org.apache.cocoon.forms.datatype.validationruleimpl.AbstractValidationRule
          org.apache.cocoon.forms.datatype.validationruleimpl.AssertValidationRule

All Implemented Interfaces:
  ValidationRule

public class AssertValidationRule
extends AbstractValidationRule

Generic validation rule that evaluates an expression. If the outcome of the expression is true, the validation is successful, otherwise not.

Version:
  $Id: AssertValidationRule.java 587759 2007-10-24 03:00:37Z vgritsenko $

Constructor Summary
`AssertValidationRule(org.outerj.expression.Expression testExpression)`

Method Summary
`boolean` | `supportsType(Class clazz, boolean arrayType)` Returns true if this ValidationRule supports validating objects of the same class as the one specified.
`ValidationError` | `validate(Object value, org.outerj.expression.ExpressionContext expressionContext)`

Methods inherited from class org.apache.cocoon.forms.datatype.validationruleimpl.AbstractValidationRule
`evaluateComparable, evaluateNumeric, getFailMessage, hasFailMessage, setFailMessage`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### AssertValidationRule

    public AssertValidationRule(org.outerj.expression.Expression testExpression)

Method Detail

### validate

    public ValidationError validate(Object value,
                                    org.outerj.expression.ExpressionContext expressionContext)

  Parameters:
    `value` - a value of a class supported by the ValidationRule implementation
    `expressionContext` - many validation rules use the xReporter expression interpreter, the expressionContext allows to resolve variables used in these expressions.

### supportsType

    public boolean supportsType(Class clazz,
                                boolean arrayType)

  Description copied from interface: `ValidationRule`
  Returns true if this ValidationRule supports validating objects of the same class as the one specified. If the flag 'arrayType' is true, this method will return true if this validation rule can validate arrays of these objects (i.e. the object passed to the validate method will then be an array).

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